Transcript
Control Equipment
PTC
PTC
modulating wall thermostat
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3008-B 16TH AVE. W. TEL: (206) 282 - 4666
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GLOBAL CONTROLS, INC. SEATTLE, WA 98119 WWW.GLOBAL-CONTROLS.NET FAX: (206) 282 - 4888 TOLL FREE: (800) 821 - 4863
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Control Equipment
PTC
specifications: power input: 24 vac ±20% power consumption: 2va minimum 17va maximum (all outputs used at maximum current output) signal outputs: 0 -10 vdc, cooling 0 -10 vdc, cooling high demand 0 -10 vdc, heating 0 -10 vdc, heating high demand 2 TPM outputs, 1 or 24 to 29 vdc 0.5 - 5 vdc actual temperature output impedance: 3 KΩ maximum, heating & cooling outputs 100 Ω maximum tpm output 1 250 Ω maximum tpm output 2 20 KΩ maximum actual temperature output ambient temp: -200 to 500C (-40 to 1200F) setpoint range: 00 to 380C (320 to 990F) deadband: 0.30C (± 0.50F) proportional band: 10 to 90C user programmable (20 to 160F) control algorithm: P.I. integral and terms auto-tuned nsb input: contact closure, programmable for 0 to 150C (00 to 270F) deadband expansion nsb override: 2 hours nsb algorithm: deadband expansion around setpoint. Optimized soft start for peak electrical demand reduction. Warm up ramp time programmable over 0 to 99 minutes minimum position: 0 to 75% independently adjustable for heating and cooling outputs. Does not affect high demand outputs. tpm period: 2 seconds tpm range: tpm 1: 0 to 100% of heating demand tpm 2: 50% to 150% of heating demand tpm 2 inhibit input: contact closure to inhibit (set to zero) tpm 2 output regardless of demand contact outputs: 2 independent dry contacts (1 amp maximum resistive load) independently programmable for heating or cooling with selectable switching points from 20% to 90% of demand external sensor: optional DS100 duct or WS100 wall display type: 2 digit led (7 segment type) default display: actual temperature selectable in 0C or 0F. programming: menu driven directly from thermostat no external tools required. memory retention: 10 years minimum
fig. #1 connections: 1. 2. 3. 4. 5. 6.
common 24 vac external sensor nsb input heating output heating high demand output 7. cooling output 8. cooling high demand output
9. tpm 1 output 10. tpm 2 output 11. contact A 12. contact A 13. contact B 14. contact B 15 tpm2 inhibit input 16. actual temp. output
dimensions: height: (120 mm) width: ( 74 mm) depth: ( 23 mm)
4.73 in. 2.91 in. 0.90 in.
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fig. #2
(access cover)
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Control Equipment
PTC
description: The ptc is a powerful microprocessor based menu driven temperature controller for heating and cooling applications. Please read the following information to maximize the potential of this powerful thermostat.The following are some highlights of the ptc: * p.i. analog heating and cooling outputs * 2 sequential p.w.m. heating outputs to proportionally drive solid state relays * 2 fully programmable dry contact relays to be used in heating and/or cooling applications * high signal selections outputs from multiple ptc's to be used by a master system * individually programmable night set back/ set up * night set back override
button functions:
hole for mounting screw
The up button is used to increase the temperature set point (warmer) while the thermostat is operating in user mode. The up button is also used to increase a given parameter when in program mode.
up button
The menu button is used to place the ptc into program mode, and to advance the program function to the next menu.
minimum position HEAT
The enter button is used to store the program function parameter into memory. Once a value is stored in memory, the ptc will remember that value even if the power is turned off at the thermostat for several years. When a parameter is being stored, the led display will flash in a circular fashion. You will notice that when changing the setpoint, the led display will do a circular flash. This is because a new setpoint is being entered into the memory of the ptc.
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night set back indicator
temperature and function led display
Similarly, the down button is used to decrease the temperature setpoint (cooler) or decrease a parameter in program mode.
Distributed By:
* intelligent self-optimizing morning self start * minimum position setting for heating and cooling output * programmable min and max allowable temperature setting * selectable internal/external sensor * led display * programmable Celcius or Fahrenheit display * plug in easily removable thermostat body * attractive flat casing
down button
menu button enter button
minimum position COOL
fig. #3
In program mode if this flash does not occur you have not stored that parameter into memory! if you do not wish to change the value in memory of a parameter, simply do not press the enter button and push the menu button to go to the next program level.
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sensor shunt exterior / interior modes
Night Set Back Indicator: When NSB is ON, the NSB Indicator will light. If you wish to locally override the NSB, momentarily push either the UP or DOWN button. NSB will be cancelled for 2 hours and the NSB light will turn off until the NSB is re-established.
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GLOBAL CONTROLS, INC. SEATTLE, WA 98119 WWW.GLOBAL-CONTROLS.NET FAX: (206) 282 - 4888 TOLL FREE: (800) 821 - 4863
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Control Equipment
PTC
ptc terminal connection descriptions:
1 common
7 cooling output 0 to 10vdc. This is the analog proportional cooling signal. It may be used to control an actuator.
2 24 vac
3 external temperature sensor. If an external temperature sensor is used, it must be connected between pins 1 and 3. When using an external temperature sensor, the sensor selection jumper must be placed in the ext position. Neptronic wall sensor ws100 or duct sensor ds100 must be used.
10 time proportional modulation output 2: 1 or 24vdc output. This output is similar to pin 9 except that the output is proportional to 50 to 150% of the heating demand. In addition the maximum current output is 100mA. 11 & 12 contact A. This contact is normally open. It will close if the demand exceeds the programmed value. the contact rating is 120V 1A resistive.
4 night set back input. To enlarge the deadband during unoccupied periods (night set back), short pins 4 and 1. The amount of deadband expansion is programmed at the thermostat.
13 & 14 contact B. This contact is normally open. It will close if the demand exceeds the programmed value. The contact rating is 120V 1A resistive.
5 heating output 0 to 10vdc. This is the analog proportional heating output. It may be used to control an actuator.
6 heating high demand output 0 to 10vdc. This output may be placed in parallel with many ptc heating high demand outputs to find the highest heating demand among many zones. This signal can be used to control a voltage sensitive relay (ie; neptronic vrc2 or vrc4) in order to turn on a heating system via stages.
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0 to 100% of the heating demand. This output is capable of supplying up to 100mA of current so it may be used to actuate several triac switches, or even a thermoelectric valve directly.
fig. #4
8 cooling high demand output 0 to 10vdc. This output may be placed in parallel with many ptc cooling high demand outputs to find the highest cooling demand among many zones. This signal can be used to control a voltage sensitive relay (ie, neptronic vrc or vrc4) in order to turn on a cooling unit via stages 9 time proportional modulation output 1; 1 or 24vdc. This heating output may be used to modulate heating elements via a triac switch or solid state relay. The output range is proportional to
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15 tpm 2 inhibit. This input, when shorted to pin 1, will turn off time proportional modulation 2 regardless of the heating demand. 16 actual temperature output, 0.5 to 5vdc. This output is proportional to the actual temperature seen by the thermostat. A chart of temperature versus voltage is shown in fig #5. The output is high impedance and any attempt to draw more than 0.5mA from this output will result in incorrect readings and may result in impro-per function of the thermostat.
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Control Equipment temp: C
0
0
F
0
PTC
vdc:
programming:
Vtemp
All of the programming of the ptc is carried out at the thermostat. No programming tool is required, and the programming sequences are all menu driven.
32
5.0
1
34
4.9
2
35.5
4.8
3
37.5
4.7
4
39
4.6
5
41
4.5
6
43
4.4
7
44.5
4.2
8
46.5
4.1
9
48
4.0
10
50
3.9
11
52
3.8
12
53.5
3.6
13
55.5
3.5
14
57
3.4
15
59
3.3
16
61
3.1
17
62.5
30
18
64.5
2.9
19
66
2.8
20
68
2.6
21
70
2.5
22
71.5
2.4
23
73.5
2.3
24
75
2.1
25
77
2.0
26
79
1.9
27
80.5
1.8
28
82.5
1.6
29
84
1.5
30
86
1.4
31
88
1.3
32
89.5
1.2
33
91.5
1.0
34
93
.96
35
95
.84
36
97
.73
37
98.5
.62
38
99
Description of all programming steps is done in the order in which they appear while actually programming the thermostat. Please look at fig. #3 for the locations of up, down, menu, and enter buttons. In many cases you will never need to program the ptc thermostat. The standard factory settings are suitable for most applications. A list of the standard factory settings are shown below. If you want to change any of these settings, follow the directions in the next section.
ptc thermostat function and factory settings functions setpoint maximum setpoint minimum contact A contact B night set back deadband proportional band soft start ramp time display type calibration
standard factory setting 300C - 860F 150C - 590F close for >50% cooling demand close for >50% heating demand 100C - 180F 20C - 3.50F 00 minutes (off) 0 C 0
.52
fig. #5
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GLOBAL CONTROLS, INC. SEATTLE, WA 98119 WWW.GLOBAL-CONTROLS.NET FAX: (206) 282 - 4888 TOLL FREE: (800) 821 - 4863
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Control Equipment
PTC
program level organization: Each function is made of 2 steps: Step 1 The function will be displayed for 2 seconds followed by message 2. Step 2 is adjusted by pushing the up or down buttons. To change to the next function, press the MENU button. If you wish to skip over a function, simply push and hold down the MENU button.
* Note: If you want to program all functions in 0F skip to message #8 "d l " step 1 of each function will be displayed (in order) for 2 seconds, and then the ptc will skip to the next function.
ptc thermostat programming modes When the ptc is turned on, it automatically displays the actual temperature in 0C. The thermostat is fully functional and it uses default factory settings Setpoint change - To check the setpoint momentarily press the UP or DOWN button. The display will automatically show the setpoint. To change setpoint press the UP or DOWN button until the required new set point is displayed. To change any other parameters of the thermostat, see all the programming levels as listed below in order of apperance along with the display messages.
program function
1st display
2st display
1
setpoint maximum
HI
0 to 38
2
setpoint minimum
LO
0 to 38
3
contact A setpoint
CA
H2, H3,...H9, C2...C9
4
contact B setpoint
Cb
H2, H3,...H9, C2...C9
5
night set back deadband
Sb
0 to 15
6
proportional band
Pb
1 to 9
7
soft start ramp time (min.)
rt
0 to 99
8
display type
d l
C or F
9
temperature calibration
CL
-5 to 5
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Control Equipment
PTC
program level organization: cont.
When the ptc is turned on. it is automatically in user mode. In this mode only the setpoint may be changed (within the limits set by the minimum and maximum setpoint settings) by pressing the up or down buttons.
Push MENU again. The third program level message ( Ca ) will be displayed for 2 seconds, 3 followed by the setpoint of contact A. It is displayed in the following format:
To enter program mode, push the MENU button once. 1
The first program level message ( hi ) will be displayed for 2 seconds, followed by the maximum setpoint setting. Pushing the up or down buttons, set the maximum setpoint you wish the user to have access to. Once that is done, push the ENTER button to store this value in memory.
Push MENU once again. The second program level message ( Lo ) will be displayed for 2 2 seconds, followed by the minimum setpoint setting. Pushing the up or down buttons, set the minimum setpoint you wish the user to have access to. Once that is done, push the ENTER button to store this value in memory.
message
contact setpoint
H2 H3 H4 H5 H6 H7 H8 H9 C2 C3 C4 C5 C6 C7 C8 C9
heating at 20 % demand heating at 30 % demand heating at 40 % demand heating at 50 % demand heating at 60 % demand heating at 70 % demand heating at 80 % demand heating at 90 % demand cooling at 20 % demand cooling at 30 % demand cooling at 40 % demand cooling at 50 % demand cooling at 60 % demand cooling at 70 % demand cooling at 80 % demand cooling at 90 % demand
Pushing the up or down buttons will change the
contact setpoint. When you have arrived at the setpoint you wish, push the ENTER button to store this value in memory.
Note that if you wish to fix the temperature setpoint to one value (ie; not adjustable by the user), set the (hi) and ( Lo ) values to the desired temperature setpoint.
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Control Equipment
PTC
program level organization: cont.
Push MENU again. The fourth program level message ( C b ) will be displayed for 2 se4 conds, fol lowed by the setpoint of contact B. The format is the same as described above for contact A, and adjustments to the setpoint are made in the same way.
will allow you to tailor the response of the ptc to any given 3 application. For most V.A.V applications, the usual proportional band is 2 to 30C (3.5 to 5.50F ). For many applications where hot or chilled water coil is used, a typical proportional band is 3 to 6 degrees 0C (5.5 to 10.50F).
Contact A and Contact B are totally independent. You may select two heating contacts, two cooling contacts, or one heating and one cooling contact. Their setpoints can be wherever you choose.
Using the up or down buttons, adjust the proportional band to the value required. Press the ENTER button to store the value in memory.
Push MENU again. The fifth program level message ( S b ) will be displayed for 2 seconds, 5 followed by the night set back deadband. This is the total deadband (over and under the setpoint) applied when the night set back terminal is connected to common. Using the up or down button, adjust the night set back deadband to the value required and press ENTER to store that value in memory.
Push MENU again. The seventh program level message ( r l c ) will be displayed followed by 7 the soft start ramp time. Since the soft start feature is only useful if modulating electric heating is used, you may disable this feature. To turn off the soft start function, set the soft start ramp time to 00. If modulating electric heating is used, normally the soft start ramp time is set the same as the morning warm up period.
Push MENU again. The sixth program level message ( P b ) will be displayed for 2 se-conds, 6 followed by the proportional band.
Push the up or down buttons to set the soft start ramp time to the number of minutes required.
The ptc operates using a p.i. algorithm, with the integral terms optimized automatically by the thermostat. But since the proportional band has the greatest effect on the output, adjusting the proportional band
Push the ENTER button to store this value in memory.
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Control Equipment
PTC
program level organization: cont.
Push MENU again. The eighth program level message (d l) will be displayed for 2 sec8 onds, followed by the display type shown in user mode. There are two choices: either degrees Celsius (0C) or degrees Fahrenheit (0F). To normally display the temperature setpoint in Celsius, press the up or down button until ( C ) is displayed. To normally display the actual temperature in Fahrenheit, press the up or down button until ( F ) is displayed.
When finished, push ENTER to store the calibration value in memory. This is the last programming step. To put the ptc thermostat back into user mode, push MENU once again.
Note that if the ptc thermostat is left in program mode the control section of the thermostat is not functional. Therefore it is always a good idea to leave it in user mode when you are finished programming.
Push the ENTER button to store this parameter in memory.
Restoring the standard factory settings If you wish to restore the standard factory settings on the ptc, then follow these steps:
Push MENU again. The ninth program level message ( C L ) will be displayed followed 9 by the temperature calibration adjustment. The ptc's temperature sensor is factory calibrated. However you may wish to adjust this calibration, particularly if you are using an external temperature sensor. To do this, simply measure the actual temperature in the room and compare it to the actual temperature displayed by the ptc. If, for example, the ptc was reading 2 degrees lower than the actual temperature, set the temperature calibration adjustment to -2.
1) turn off the power to the thermostat. This may be done by unplugging the ptc from the sub-base. 2) push and hold down the menu, enter, and up buttons at the same time. 3) turn the power back on to the ptc (or plug it back into it's sub-base). The thermostat must be at this point, in the program mode if the MENU button was held down for too long. To get back into user mode, push and hold down the MENU button until you see the display show (C L). Then release the MENU button, and momentarily push the MENU button once again.
Adjust the calibration value by pushing the up or down buttons.
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Control Equipment
PTC
installation:
designed to fit on standard 2020 electrical box, thermostat box, or directly on dry-wall.
ensured to align pin guides with the baseboard for proper fitting.
to open: grab top and bottom of front cover and pull in a downward direction.
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dimensions for wall mounting. (Suggested cut-out for terminal block.)
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Control Equipment
PTC
typical applications: central cooling with baseboard heating (on/off) BBMS2000 damper motor
L1 L2
Heater R
R Fan on 24 hours ptc modulating wall thermostat
cooling unit Terminal strip
Notes: use intermediate relay R for high current load (over 1A)
discharge air temp control with remote temp indicator return air
duct heater
n.o. fresh air
n.c. ds100
bbms2000 damper motor (interlinked with push rods and ball joints)
triac switch
-
ptc modulating wall thermostat
+ common 24vac L1 .5 to 5 vdc remote temp. indicator Notes: Set sensor select jumper to ext.
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Control Equipment
PTC
Two typical zone VAV box control. Cooling ramps modulates VAV Box actuator, heating ramps modulates terminal reheat, high cooling demand cycles A/C unit. (For any number of zones)
ptc modulating wall thermostat
BBMS2000 damper motor
+
triac switch
heater
L2 L1
BBMS2000 damper motor
ptc modulating wall thermostat
+
triac switch
common
heater
L2 L1
A/C stage 1
24vac A/C stage 2 VRC
NSB on when closed
NATIONAL ENVIRONMENTAL PRODUCTS LTD., INC. MAINTAINS A POLICY OF CONTINUAL PRODUCT DEVELOPMENT; THEREFORE, IN THE INTEREST OF TECHNICAL IMPROVEMENTS, THE FIRM RESERVES THE RIGHT TO CHANGE THE DESIGN, SPECIFICATIONS OR COMPONENTS OF THE EQUIPMENT WITHOUT PRIOR NOTICE.
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GLOBAL CONTROLS, INC. 3008-B 16TH AVE. W. SEATTLE, WA 98119 (800) 821-4863 (206) 282-4666 (206) 282-4888 Fax
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